Load common object table and object placement data

include/level.h

@@ -4,6 +4,8 @@
 #include <stdint.h>
 #include <psxgpu.h>
 
+#include "object_state.h"
+
 #define LEVEL_MAX_X_CHUNKS   255
 #define LEVEL_MAX_Y_CHUNKS    31
 #define LEVEL_ARENA_SIZE  131072
@@ -51,10 +53,18 @@ typedef struct {
     uint16_t *tiles;
 } LevelLayerData;
 
+#define MAX_OBJECTS_PER_CHUNK 15
+
+typedef struct {
+    uint8_t num_objects;
+    ObjectState objects[MAX_OBJECTS_PER_CHUNK];
+} ChunkObjectData;
+
 typedef struct {
     uint8_t num_layers;
     uint8_t _unused0;
     LevelLayerData *layers;
+    ChunkObjectData **objects;
 
     uint16_t crectx, crecty;
     uint16_t prectx, precty;
@@ -75,4 +85,7 @@ void render_lvl(
     int32_t cam_x, int32_t cam_y);
 
 
+// Object-related. These are defined in object_state.c
+void load_object_placement(const char *filename, LevelData *lvl);
+
 #endif

include/memalloc.h

@@ -2,22 +2,23 @@
 #define MEMALLOC_H
 
 #include <stdint.h>
+#include <stdlib.h>
 
 typedef struct {
-    uint32_t start;
-    uint32_t ptr;
-    uint32_t size;
+    uintptr_t start;
+    uintptr_t ptr;
+    size_t    size;
 } ArenaAllocator;
 
-void  alloc_arena_init(ArenaAllocator *arena, void *start, uint32_t size);
+void  alloc_arena_init(ArenaAllocator *arena, void *start, uintptr_t size);
 void  alloc_arena_free(ArenaAllocator *arena);
-void *alloc_arena_malloc(ArenaAllocator *arena, uint32_t size);
+void *alloc_arena_malloc(ArenaAllocator *arena, size_t size);
 
 uint32_t alloc_arena_bytes_used(ArenaAllocator *arena);
 uint32_t alloc_arena_bytes_free(ArenaAllocator *arena);
 
 void fastalloc_init();
 void fastalloc_free();
-void *fastalloc_malloc(uint32_t size);
+void *fastalloc_malloc(size_t size);
 
 #endif

include/model.h

@@ -1,5 +1,5 @@
-#ifndef OBJECT_H
-#define OBJECT_H
+#ifndef MODEL_H
+#define MODEL_H
 
 #include <stdint.h>
 #include <psxgpu.h>

include/object.h

@@ -0,0 +1,89 @@
+#ifndef OBJECT_H
+#define OBJECT_H
+
+#include <stdint.h>
+
+#include "level.h"
+
+/* ======================== */
+/*  OBJECT PROPERTY DATA   */
+/* ======================== */
+
+typedef enum int8_t {
+    // Dummy objects
+    OBJ_DUMMY_RINGS_3V         = -2,
+    OBJ_DUMMY_RINGS_3H         = -1,
+
+    // Actual objects
+    OBJ_RING                   = 0x00,
+    OBJ_MONITOR                = 0x01,
+    OBJ_SPIKES                 = 0x02,
+    OBJ_CHECKPOINT             = 0x03,
+    OBJ_SPRING_YELLOW          = 0x04,
+    OBJ_SPRING_RED             = 0x05,
+    OBJ_SPRING_YELLOW_DIAGONAL = 0x06,
+    OBJ_SPRING_RED_DIAGONAL    = 0x07,
+    OBJ_GOAL_SIGN              = 0x08,
+    OBJ_SWITCH                 = 0x09,
+} ObjectType;
+
+#define MASK_FLIP_FLIPX  0x1 // Flip on X axis
+#define MASK_FLIP_FLIPY  0x2 // Flip on Y axis
+#define MASK_FLIP_ROTCW  0x4 // Rotated clockwise
+#define MASK_FLIP_ROTCT  0x8 // Rotated counterclockwise
+
+typedef enum uint8_t {
+    MONITOR_KIND_NONE          = 0,
+    MONITOR_KIND_RING          = 1,
+    MONITOR_KIND_SPEEDSHOES    = 2,
+    MONITOR_KIND_SHIELD        = 3,
+    MONITOR_KIND_INVINCIBILITY = 4,
+    MONITOR_KIND_1UP           = 5,
+    MONITOR_KIND_SUPER         = 6,
+} ObjectMonitorKind;
+
+
+/* ======================== */
+/*  OBJECT TABLE STRUCTURE */
+/* ======================== */
+
+typedef struct {
+    uint8_t u0, v0;
+    uint8_t w, h;
+    uint8_t flipmask;
+} ObjectAnimFrame;
+
+typedef struct {
+    ObjectAnimFrame *frames;
+    uint16_t        num_frames;
+    int8_t          loopback;
+    // TODO: number of animation frames?
+} ObjectAnim;
+
+typedef struct {
+    int16_t    offsetx, offsety;
+    ObjectAnim *animations;
+    uint16_t   num_animations;
+} ObjectFrag;
+
+// TODO: ObjectAnimState
+
+typedef struct {
+    ObjectAnim *animations;
+    ObjectFrag *fragment;
+    // TODO: Global animation state here, could be NULL
+    uint16_t num_animations;
+} ObjectTableEntry;
+
+typedef struct {
+    uint8_t          is_level_specific;
+    uint16_t         num_entries;
+    ObjectTableEntry *entries;
+} ObjectTable;
+
+
+void load_object_table(const char *filename, ObjectTable *tbl);
+void unload_object_table(ObjectTable *tbl);
+
+
+#endif

include/object_state.h

@@ -0,0 +1,22 @@
+#ifndef OBJECT_STATE_H
+#define OBJECT_STATE_H
+
+#include <stdint.h>
+
+/* ======================== */
+/*  OBJECT STATE STRUCTURE */
+/* ======================== */
+
+typedef struct {
+    uint8_t kind;
+} MonitorExtra;
+
+typedef struct {
+    uint16_t id;
+    uint8_t flipmask;
+    uint8_t props;
+    int16_t rx, ry; // Positions relative to chunk top-left corner
+    void    *extra;
+} ObjectState;
+
+#endif

src/level.c

@@ -7,7 +7,7 @@
 
 #define MAX_TILES 1400
 
-static ArenaAllocator _level_arena = { 0 };
+ArenaAllocator _level_arena = { 0 };
 static uint8_t _arena_mem[LEVEL_ARENA_SIZE];
 
 extern int debug_mode;
@@ -174,18 +174,23 @@ load_lvl(LevelData *lvl, const char *filename)
     lvl->num_layers = get_byte(bytes, &b);
     lvl->_unused0 = 0; b += 1;
 
+    uint16_t max_tiles = 0;
+
     lvl->layers = alloc_arena_malloc(&_level_arena, lvl->num_layers * sizeof(LevelLayerData));
     for(uint8_t n_layer = 0; n_layer < lvl->num_layers; n_layer++) {
         LevelLayerData *layer = &lvl->layers[n_layer];
         layer->width = get_byte(bytes, &b);
         layer->height = get_byte(bytes, &b);
         uint16_t num_tiles = (uint16_t)layer->width * (uint16_t)layer->height;
+        if(num_tiles > max_tiles) max_tiles = num_tiles;
         layer->tiles = alloc_arena_malloc(&_level_arena, num_tiles * sizeof(uint16_t));
         for(uint16_t i = 0; i < num_tiles; i++) {
             layer->tiles[i] = get_short_be(bytes, &b);
         }
     }
 
+    free(bytes);
+
     // These values are static because we're always using the same
     // coordinates for tpage and clut info. For some reason they're
     // not loading correctly, but we don't really need them
@@ -196,7 +201,12 @@ load_lvl(LevelData *lvl, const char *filename)
     //lvl->clutmode = 0; // NOTE: This was set to tim->mode previously.
     lvl->_unused1 = 0;
 
-    free(bytes);
+    // Initialize object state array within level map
+    printf("Allocating object array\n");
+    lvl->objects = alloc_arena_malloc(&_level_arena, max_tiles * sizeof(ChunkObjectData *));
+    for(uint16_t i = 0; i < max_tiles; i++) {
+        lvl->objects[i] = NULL;
+    }
 }
 
 // Level sprite buffer.

src/memalloc.c

@@ -7,11 +7,12 @@ ArenaAllocator scratchpad_arena;
 #define SCRATCHPAD_SIZE  1024
 
 void
-alloc_arena_init(ArenaAllocator *arena, void *start, uint32_t size)
+alloc_arena_init(ArenaAllocator *arena, void *start, size_t size)
 {
-    arena->start = (uint32_t)start;
+    uintptr_t st = (uintptr_t)start;
+    arena->start = st;
     arena->ptr   = arena->start;
-    arena->size  = (uint32_t)size;
+    arena->size  = size;
 }
 
 void
@@ -21,12 +22,19 @@ alloc_arena_free(ArenaAllocator *arena)
 }
 
 void *
-alloc_arena_malloc(ArenaAllocator *arena, uint32_t size)
+alloc_arena_malloc(ArenaAllocator *arena, size_t size)
 {
-    void *p = (void *)arena->ptr;
-    assert(arena->ptr + size < arena->start + arena->size);
-    arena->ptr += size;
-    return p;
+    // Align size so we don't get unaligned memory access
+    size += 8 - (size % 8);
+
+    uintptr_t p = (uintptr_t)arena->ptr;
+    uintptr_t align_diff = p % 8;
+    /* printf("Alotted size so far: %d / %d, requested: %lu\n", */
+    /*        alloc_arena_bytes_used(arena), alloc_arena_bytes_free(arena), */
+    /*        size); */
+    assert((arena->ptr + size) < (arena->start + arena->size));
+    arena->ptr += size + align_diff;
+    return (void *)p;
 }
 
 uint32_t
@@ -54,7 +62,7 @@ fastalloc_free()
 }
 
 void *
-fastalloc_malloc(uint32_t size)
+fastalloc_malloc(size_t size)
 {
     return alloc_arena_malloc(&scratchpad_arena, size);
 }

src/object.c

@@ -0,0 +1,134 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "object.h"
+#include "memalloc.h"
+#include "util.h"
+
+extern ArenaAllocator _level_arena;
+
+void
+_load_animation(ObjectAnim *animation, uint8_t *bytes, uint32_t *b)
+{
+    animation->frames = NULL;
+    animation->num_frames = get_short_be(bytes, b);
+    animation->loopback   = get_byte(bytes, b);
+    if(animation->num_frames > 0) {
+        animation->frames = alloc_arena_malloc(
+            &_level_arena,
+            sizeof(ObjectAnimFrame) * animation->num_frames);
+
+        for(uint16_t i = 0; i < animation->num_frames; i++) {
+            ObjectAnimFrame *frame = &animation->frames[i];
+            frame->u0 = get_byte(bytes, b);
+            frame->v0 = get_byte(bytes, b);
+            frame->w = get_byte(bytes, b);
+            frame->h = get_byte(bytes, b);
+            frame->flipmask = get_byte(bytes, b);
+        }
+    }
+}
+
+void
+load_object_table(const char *filename, ObjectTable *tbl)
+{
+    uint8_t *bytes;
+    uint32_t b, length;
+
+    bytes = file_read(filename, &length);
+    if(bytes == NULL) {
+        printf("Error reading OTD file %s from the CD.\n", filename);
+        return;
+    }
+
+    b = 0;
+
+    tbl->is_level_specific = get_byte(bytes, &b);
+    tbl->num_entries       = get_short_be(bytes, &b);
+
+    if(tbl->num_entries == 0) goto end;
+
+    tbl->entries = alloc_arena_malloc(
+        &_level_arena,
+        sizeof(ObjectTableEntry) * tbl->num_entries);
+
+    printf("Entries at %p\n", tbl->entries);
+
+
+    for(uint16_t i = 0; i < tbl->num_entries; i++) {
+        printf("Reading entry %d.\n", i);
+        ObjectTableEntry *entry = &tbl->entries[i];
+        printf("Init animations and fragment\n");
+        entry->animations = NULL;
+        entry->fragment = NULL;
+        printf("OK\n");
+
+        uint8_t _id = get_byte(bytes, &b); // Entry ID, always sequential; discarded
+        printf("Registered id: %d\n", _id);
+        uint8_t has_fragment = get_byte(bytes, &b);
+        entry->num_animations = get_short_be(bytes, &b);
+
+        if(entry->num_animations > 0) {
+            printf("Start reading animations...\n");
+            entry->animations = alloc_arena_malloc(
+                &_level_arena,
+                sizeof(ObjectAnim) * entry->num_animations);
+
+            for(uint16_t j = 0; j < entry->num_animations; j++) {
+                printf("Reading animation %d.\n", j);
+                ObjectAnim *animation = &entry->animations[j];
+                _load_animation(animation, bytes, &b);
+            }
+        }
+
+        if(has_fragment) {
+            printf("Start reading fragment...\n");
+            ObjectFrag *fragment = alloc_arena_malloc(
+                &_level_arena,
+                sizeof(ObjectFrag));
+            entry->fragment = fragment;
+
+            fragment->offsetx = get_short_be(bytes, &b);
+            fragment->offsety = get_short_be(bytes, &b);
+            fragment->num_animations = get_short_be(bytes, &b);
+            fragment->animations = alloc_arena_malloc(
+                &_level_arena,
+                sizeof(ObjectAnim) * fragment->num_animations);
+            
+            for(uint16_t j = 0; j < fragment->num_animations; j++) {
+                printf("Reading fragment animation %d.\n", j);
+                ObjectAnim *animation = &fragment->animations[j];
+                _load_animation(animation, bytes, &b);
+            }
+        }
+    }
+
+end:
+    free(bytes);
+    printf("Loaded %d object types.\n", tbl->num_entries);
+}
+
+void
+unload_object_table(ObjectTable *tbl)
+{
+    // Since the object table has to be heap-allocated, we need to unload it
+    for(uint16_t i = 0; i < tbl->num_entries; i++) {
+        ObjectTableEntry *entry = &tbl->entries[i];
+        for(uint16_t j = 0; j < entry->num_animations; j++) {
+            ObjectAnim *animation = &entry->animations[j];
+            free(animation->frames);
+        }
+        if(entry->num_animations > 0) free(entry->animations);
+
+        if(entry->fragment) {
+            for(uint16_t j = 0; j < entry->fragment->num_animations; j++) {
+                ObjectAnim *animation = &entry->fragment->animations[j];
+                free(animation->frames);
+            }
+            if(entry->fragment->num_animations > 0)
+                free(entry->fragment->animations);
+            free(entry->fragment);
+        }
+    }
+    free(tbl->entries);
+}

src/object_state.c

@@ -0,0 +1,100 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "object.h"
+#include "object_state.h"
+#include "util.h"
+#include "memalloc.h"
+
+extern ArenaAllocator _level_arena;
+
+void
+_emplace_object(
+    ChunkObjectData *data,
+    uint8_t is_level_specific,
+    int8_t type, uint8_t flipmask, int32_t vx, int32_t vy, void *extra)
+{
+    ObjectState *state = &data->objects[data->num_objects++];
+    assert(data->num_objects < MAX_OBJECTS_PER_CHUNK);
+
+    state->id = type + (is_level_specific ? 100 : 0);
+    state->flipmask = flipmask;
+    state->rx = vx & 0x7f;
+    state->ry = vy & 0x7f;
+    state->extra = extra;
+}
+
+void
+load_object_placement(const char *filename, LevelData *lvl)
+{
+    uint8_t *bytes;
+    uint32_t b, length;
+
+    bytes = file_read(filename, &length);
+    if(bytes == NULL) {
+        printf("Error reading OTD file %s from the CD.\n", filename);
+        return;
+    }
+
+    b = 0;
+
+    uint16_t created_objects = 0;
+    uint16_t num_objects = get_short_be(bytes, &b);
+    for(uint16_t i = 0; i < num_objects; i++) {
+        uint8_t is_level_specific = get_byte(bytes, &b);
+        int8_t type = get_byte(bytes, &b);
+        uint8_t flipmask = get_byte(bytes, &b);
+        int32_t vx = get_long_be(bytes, &b);
+        int32_t vy = get_long_be(bytes, &b);
+        void *extra = NULL;
+
+        switch(type) {
+        default: break;
+        case OBJ_MONITOR:
+            extra = alloc_arena_malloc(&_level_arena, sizeof(MonitorExtra));
+            ((MonitorExtra *)extra)->kind = get_byte(bytes, &b);
+            break;
+        }
+
+        // Get chunk at position
+        int32_t cx = vx >> 7;
+        int32_t cy = vy >> 7;
+        int32_t chunk_pos;
+        if((cx < 0) || (cx >= lvl->layers[0].width)) chunk_pos = -1;
+        else if((cy < 0) || (cy >= lvl->layers[0].height)) chunk_pos = -1;
+        else chunk_pos = (cy * lvl->layers[0].width) + cx;
+
+        ChunkObjectData *data = lvl->objects[chunk_pos];
+        if(!data) {
+            data = alloc_arena_malloc(&_level_arena, sizeof(ChunkObjectData));
+            lvl->objects[chunk_pos] = data;
+        }
+
+        if(type < 0) {
+            // This is a dummy object, so create others in its place.
+            switch(type) {
+            case OBJ_DUMMY_RINGS_3V:
+                _emplace_object(data, 0, OBJ_RING, 0, vx, vy - 24, NULL);
+                _emplace_object(data, 0, OBJ_RING, 0, vx, vy, NULL);
+                _emplace_object(data, 0, OBJ_RING, 0, vx, vy + 24, NULL);
+                created_objects += 3;
+                break;
+            case OBJ_DUMMY_RINGS_3H:
+                _emplace_object(data, 0, OBJ_RING, 0, vx - 24, vy, NULL);
+                _emplace_object(data, 0, OBJ_RING, 0, vx, vy, NULL);
+                _emplace_object(data, 0, OBJ_RING, 0, vx + 24, vy, NULL);
+                created_objects += 3;
+                break;
+            default: break;
+            }
+        } else {
+            _emplace_object(data, is_level_specific, type, flipmask, vx, vy, extra);
+            created_objects++;
+        }
+    }
+
+    printf("Loaded %d objects.\n", created_objects);
+
+    free(bytes);
+}

src/screen_disclaimer.c

@@ -23,7 +23,7 @@ void
 screen_disclaimer_load()
 {
     screen_disclaimer_data *data = screen_alloc(sizeof(screen_disclaimer_data));
-    uint32_t length;
+    uint32_t length; // 153624 B
     data->disclaimer_bg = file_read("\\MISC\\DISK.TIM;1", &length);
     data->disclaimer_timer = 0;
 }

src/screen_level.c

@@ -15,6 +15,7 @@
 #include "level.h"
 #include "timer.h"
 #include "model.h"
+#include "object.h"
 
 extern int debug_mode;
 
@@ -24,10 +25,11 @@ static uint8_t music_channel = 0;
 
 static Player player;
 
-TileMap16  map16;
-TileMap128 map128;
-LevelData  leveldata;
-Camera     camera;
+TileMap16   map16;
+TileMap128  map128;
+LevelData   leveldata;
+Camera      camera;
+ObjectTable obj_table_common;
 
 #define CHANNELS_PER_BGM    3
 static uint32_t bgm_loop_sectors[] = {
@@ -73,6 +75,7 @@ static uint32_t bgm_loop_sectors[] = {
 // Forward function declarations
 static void level_load_player();
 static void level_load_level();
+static void level_unload_level();
 
 // TODO!!!
 typedef struct {
@@ -99,6 +102,7 @@ screen_level_unload(void *)
 {
     sound_stop_xa();
     level_reset();
+    level_unload_level();
     sound_reset_mem();
     screen_free();
 }
@@ -356,6 +360,17 @@ level_load_level()
     printf("Loading %s...\n", filename0);
     load_lvl(&leveldata, filename0);
 
+    // Load common objects
+    printf("Loading common object table...\n");
+    load_object_table("\\LEVELS\\COMMON\\OBJ.OTD", &obj_table_common);
+
+    // Load level objects
+    // TODO
+
+    // Load object positioning on level
+    snprintf(filename0, 255, "%s\\Z%1u.OMP;1", basepath, (level & 0x01) + 1);
+    load_object_placement(filename0, &leveldata);
+
 
     // Pre-allocate and initialize level primitive buffer
     prepare_renderer(&leveldata);
@@ -376,3 +391,10 @@ level_load_level()
 
     sound_play_xa(filename0, 0, music_channel, bgm_loop_sectors[level]);
 }
+
+static void
+level_unload_level()
+{
+    // Object tables are heap-allocated
+    //unload_object_table(&obj_table_common);
+}